body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #0f172a;
  color: white;
}

header {
  padding: 60px;
  text-align: center;
  background: #1e293b;
}

main {
  padding: 40px;
  max-width: 800px;
  margin: auto;
}

a {
  color: #38bdf8;
}

footer {
  text-align: center;
  padding: 20px;
  opacity: 0.7;
}